Air-brake



(No Model.)

F. LANSBERG.

AIBVBRAKB. 110.415,515. Patented Nov. 19, 1889.

n. Pneus Fmmumgnvher. wnmngwl n. c.

UNITE-c STATES PATENT Ormes.

FRANK LANSBERG, OF ST. LOUIS, MISSOURI, ASSIGNOR TO THE LANSIERG BRAKE COMPANY, OF EAST ST. LOUIS, ILLINOIS.

AI R B RA K E.

SPECIFICATION forming part of Letters Patent No. 415,515, dated November 19, 18.89,

Y Application tiled March 1, 1889. Serial No. 301,624. (No model.) l

To @ZZ zcwnt it may concern: a valve 19, as shown in Figs. II and III. The Be it known that I, FRANK LANSBERG, of pipe 2 of the receiver communicates with the the city of St. Louis, in the State of Missouri, port 1S, through means of a port 20. (See Fig. have invented a certain new and useful Im- IV.) In the port 2O the valve 17 is located. provenientin Air-Brakes,of which the follow- The portextends beyond the valve and com- 55 ing is a full, clear, and exact descriptiomrefmunicates with the brake-cylinder pipe 3. erence being had to the accompanying draw- (See Figs. IV and V.) ings, forming part of this specification, and in The operation is as follows: The air passwhiching through the train-pipe enters the cham- Io Figure I is a longitudinal section illustraber 5 through the port 4. On entering it 6o l tive of my improvement and taken on line moves the pistons 9 and 11 from the position I I, Fig. III. Fig. II is a section taken on shown in Fig. I to the position shown in Fig. line II II, Fig. III. Fig. III is a transverse II. This opens communication between the section taken on line III III, Fig. II. Fig. ports 4 and 1S, (the port 18 being provided i5 IV is a transverse section taken on line IV IV, with a check-valve 19 for the purpose of 65 Fig. II. Fig. V is a section taken on line V V, regulating the pressure in the receiver,) and IV. the air passing through the ports 4 and 1S My invention relates to certain improve- (the valve 19 opening under the pressure) ments in air-brakes for railway-cars and my passes out through the pipe 2 to the receiver.

2o invention consists in features of novelty here- As soon as the pressure in the train-pipe is 7o inafter fully described, and pointed out in the released, the check-valve 19 closes, and the claims. pressure behind the piston 11 moves the pis- Referring to the drawings, 1 represents part tons 9 and 11 from the position shown in Fig. of the train-pipe; 2, part of the pipe leading II to the position shown in Fig. I. This to the receiver, and 3 part of the pipe leading shuts off communication between the ports 75 to the brake-cylinder. i 4 and 18 through the chamber 5, and at the 4 represents a port leading from the trainsame time opens communication between the pipe to a chamber 5. Located in the port 4 receiver and the brake-cylinders by operatis an enlargement G, cut oit from the port 4, ing the valve 17 through means of its desave for a small passage-way 7, by means of scribed connection with the stem 10 of the 8O lips or iianges S. The object of this enlargepistons 9 and 11, the valve making one-quarment is to receive and collect the dust and ter of a turn from the position shown in Fig. foreign matter in the air and keep them from V. As soon as the pressure in the train-pipe entering the valve-chamber. In the chamber again exceeds that of thereceiver, the pistons 3 5 5 is a piston 9, secured to one end of a stem 9 and 1l are moved again from the position 85 10. On the other end of the stem 10 is apisshown in Fig. I to the position shown in Fig. ton 11, smaller than the piston i). This piston II, and the air passes to the receiver, as de- 11 is located in a chamber 12, communicating scribed. )Vhen this action takes place, the with the chamber 5. On one side of the stem valve 17 closes the port 20 again from the re- 10 is a rack 13. On the other side of the stem ceiver and opens communication between the 90 there is an arm 14, the outer end of which fits brake-cylinder and an exhaust-port 30. (See between longitudinal ribs or guides 15, to keep Fig. V.) the stem of the pistons from turning. The I claim as my invention-- rack 13 is engaged by a segment 1G. This 1. The combination of a train-pipe, a resegment (see Fig. IV) is secured to the end ceiver-pipe and brake-cylinder pipe, acham- 95 of a three-way cock or valve 17. ber, a port forming communication between 1S represents a port leading from the chamthe chamber and the train-pipe, a piston 1ober 12 to the chamber 5, thus forming a comcated in said chamber, a second chamber, a munication between the two chambers around piston located therein, a stem connecting 5o the pistons 9 and 1l. In the port 18 is located said pistons, a port 1S, forming communica- IOO tion between said chambers, passing around the pistons, and a port 20, communicating with the receiver-pipe and port 18 and having a separate mechanically automatically operated valve therein, substan-tially as and for the purpose set forth.

2. The combination of a train-pipe, a receiver-pipe, a brake-cylinder pipe, a chamber, a port 4, forming communication between the chamber and the train-pipe, a piston located in the chamber, a second chamber, a piston located in said second chamber, a stem connect-ing the pistons, 'a port 18, extending around both pistons and forming communication between said chambers and the receiver-pipe, a port 20,'forming communication between the receiver-pipe and the brakecylinder pipe, a separate valve located in said` port, and a' mechanical connection between said valve and said stem, substantially as and for the purpose set forth.

The combination of a train-pipe, a receiver-pipe, a brake-cylinder pipe, a chamber, a port forming communication between the said chamber and train-pipe, a piston located 'in said chamber, a second chamber, a piston located in said second chamber, a stem connecting said pistons, a rack on said stem, a port extending around both pistons and forming communication between said chambers and the receiver-pipe, a port forming communication between the receiver-pipe and the brake-cylinder pipe,and avalve located in said last-mentioned port and provided with a segment engaging a rack, substantially as and for the purpose set forth.

4. The combination of' the train-pipe, a

.brake-cylinder pipe, and a receiver-pipe,

valves controlling the passages between said pipes, and an enlargement 6, having anges 8, forming a passage 7, arranged as shown, substantially as and for the purpose set forth.

5. The combination, with the brake-cylinder pipe and the receiver-pipe, of two cham- `operated automatically, substantially as set 6. The combination, with the train-pipe, receiver-pipe, and brake-cylinder pipe, of two chambers, each having a piston therein, a stem connecting said pistons, a port extending around said pistons and communicating with said chambers on the remote sides of the pistons and with the train-pipe and receiverpipe, the port 20, having an exhaust connecting the receiver-pipe and train-pipe, a threeway cock in said port 20, av segment on said cock, and a rack on said stem engaging said segment, substantially as set forth.

7. The combination, with the train-pipe, the receiver-pipe and the brake-cylinder pipe, of two chambers, each having a piston therein, a stem connecting said pistons, a port connecting said chambers with the receiver-pipe, a port 20, connecting the receiver-pipe with the brake-cylinder pipe, a cock in port 20, asegment on said cock, a rack on said stern engaging said segment, the guide 15, and an arm on said stem engaging in said guide for preventing the revolution of said stem, substantially as set forth.

FRANK LANSBERG.

In presence of- EDW. S. KNIGHT, THOMAS KNIGHT. 

